Improvement in sash-balances



W. E. FACER.

SASH-BALANCE.

Patented March 28, 1876.

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METERS, PHOTO-L11' R. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

WILSON E. FACER, OE TORONTO, OANADA.

IMPROVEMENT IN SASH-BALANCES.

Specification forming part of Letters Patent No. 175,442, dated March28, 1876; application tiled February 15, 1876.

To all whom it may concern:

Be it known that I, WILSON E. FACER, of Toronto, Canada, have invented anew and Improved Sash Balance and Lock; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawing, forming a part of thisspecication, in which- Figure I is a side view of the device containedin a recess in the window-frame and applied to the sash Fig. 2, avertical section through line a: x of Fig. 3 5 Fig. 3, a rear edge viewwith wheel and spring removed; Fig. 4, a View of Fig. 1 from theopposite side; Fig. 5, an end view.

My invention relates to certain improvements in sash-balances. Itbelongs to that class of sashbalances in which the tension of a coiledband-sprin g operates through a toothed wheel and a rack-bar on thewindow-sash to balance the same; and it consists in the peculiarconstruct-ion and novel arrangement of devices for locking the wheel,and thus holding the window-sash in any desired position against theuneven tension of the spring or the attempts of burglars, as hereinaftermore fully described and definitely claimed.

In the drawing, A represents the metallic frame carrying the workingdevices, which frame is made with a face-plate, a, that is set tlushwith the side of the window-frame,and a support, b, at right anglesthereto, which extends iuto a recess cutinto the window-frame. To saidsupport is attached a stud, c, upon which revolves a toothed wheel, B,having a hub, d. To this huh is attached one end of a coil-spring,G, theother end being fastened to the faceplate a ofthe main frame. D is arestraining loop or band fastened at eachend to the plate a, andencompassing the spring, so as to limit its too great freedom or motion.The teeth of wheel B pass through a slot, c, in plate a, and mesh withthe perforations of a bar, E, or arack-bar attached to the side of thewindow-sash. The spring and toothed wheel are so arranged with respectto the window-sash that the latter winds up the spring upon its downwardmovement, and allows it to expand or unwind on the upward or hoistingmovement. rlhe weight of the window-sash is by this means sustained andbalanced by the strength of the spring, so that a slight application offorce will suffice for either hoisting` or lowering the windowsash. Tohold the sash stationary and permanently locked, when down, against theefforts ofburglars, and to hold it tixedly against the uney qual tensionofthe spring at different heights when raised, I construct the toothedWheel with a row of perforations, f, near its periphery to receive alocking-bolt, F. Said bolt slides back and forth through the support b,and is attached to the end of a spring, g, which forces the bolt throughthe support b into the perforationsf, to hold the wheel rigid andstationary. The said bolt is attached to a slide, l1., moving in betweenguide-lugs iz, which slide is hollowed outA from the interior, andinside the sameis eccentrically journaled a shaft, j, ,carrying at oneend a bit or cam k, and at the other a knob, l. The knob projects uponthe outside of the Window-fralne, and when turned withdraws the boltfrom the holes in the wheel, and allows the sash to be moved up or down.

From the above description it will be seen that the device performs thetriple function of sash-balance, sashholder, and sash-lock, and will befound to be free from the troublesome breakage and wearing away ofthecord when weights are used,'and an effective security againsthouse-breakers and thieves.

Having thus-described my invention, what I claim as new is y rfhecombination, with restraining-loop D, coil-spring G, and toothed wheelB, having perforations f, of the bolt F, spring g, slide h, andknob-shaft j, carrying cam lc, substantially as and for the purposedescribed.

W. E. FACER. Witnesses:

R. L. WHITE, GEO. W. BADGEROW.

